Karapati S., Giannakopoulou T., Todorova N., Boukos N., Antiohos S., Papageorgiou
                           D., Chaniotakis E., Dimotikali D., Trapalis C. (2014). "TiO2 functionalization for
                           efficient NOx removal in photoactive cement.", Applied Surface Science, Vol. 319,
                           pp. 29-36
